Introduction to Trigonometry

CBSE Class 10 · Mathematics · 60 past questions

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1. Q11 2026 (Basic)

   The value of $\sin 90^\circ \cos 90^\circ - \sin^2 60^\circ$ is…

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2. Q28 2025

   If $x\cos 60^\circ + y\cos 0^\circ + \sin 30^\circ - \cot 45^\circ = 5$, then find the value of $x + 2y$.

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3. Q33 2025 (Basic)

   An injured bird was found on the roof of a building. The building is 15 m high. A fireman was called to… (with a figure)

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4. Q42 2024

   Evaluate : $2\sqrt{2}\cos 45^{\circ}\sin 30^{\circ} + 2\sqrt{3}\cos 30^{\circ}$

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5. Q46 2024 (Basic)

   Evaluate: $\sin A \cos B + \cos A \sin B$; if $A = 30°$ and $B = 45°$.

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6. Q55 2023

   $\left[\frac{3}{4}\tan^2 30° - \sec^2 45° + \sin^2 60°\right]$ is equal to

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7. Q59 2023 (Basic)

   Evaluate : $\tan^2 60^\circ - 2\,\text{cosec}^2 30^\circ - 2\tan^2 30^\circ$.

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